IL92001A0 - Agc isolation of information in tdma systems - Google Patents

Agc isolation of information in tdma systems

Info

Publication number
IL92001A0
IL92001A0 IL92001A IL9200189A IL92001A0 IL 92001 A0 IL92001 A0 IL 92001A0 IL 92001 A IL92001 A IL 92001A IL 9200189 A IL9200189 A IL 9200189A IL 92001 A0 IL92001 A0 IL 92001A0
Authority
IL
Israel
Prior art keywords
information
interest
transmission
processing
instant
Prior art date
Application number
IL92001A
Other versions
IL92001A (en
Original Assignee
Motorola Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of IL92001A0 publication Critical patent/IL92001A0/en
Publication of IL92001A publication Critical patent/IL92001A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H03G3/3078—Circuits generating control signals for digitally modulated signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/10—Arrangements for reducing cross-talk between channels

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)
  • Transmitters (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

In a communications system having transmissions containing certain information-of-interest (147, 149) at predetermined intervals in the transmission, there is provided a method for isolating and processing that information-of-interest. The method is characterized by sensing the start of a transmission (141) and isolating for processing as the information-of-interest, the information received about instant(s) predeterminally removed in time (145) from the sensed start of transmission (141). Thus, the information-of-interest is isolated principally on the basis of elapsed time. The method for isolating and processing that information-of-interest is further characterized by sensing (249) the start of a transmission from the received signal power of the transmission exceeding a predetermined threshold (259); AGCing the transmission (233) and attenuating the AGC'd transmission from a maximum level to a desired level before the information-of-interest is expected to arrive; isolating for processing as the information-of-interest, the information received about instant(s) predeterminally removed in time from the sensed start of transmission, by timing (263) the expected interval between the instant that the start of the transmission is sensed and the predetermined instant that the information-in-interest should arrive (whereby the information-of-interest is isolated principally on the basis of elapsed time); tagging the information (247) isolated about that instant for processing; and beginning processing (275) with information just preceeding the isolated information (whereby the reliability of the information detection is enhanced by one-to-several bits). <IMAGE>
IL9200189A 1988-11-30 1989-10-16 Agc isolation of information in tdma systems IL92001A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/277,724 US5638375A (en) 1988-11-30 1988-11-30 AGC isolation of information in TDMA systems

Publications (2)

Publication Number Publication Date
IL92001A0 true IL92001A0 (en) 1990-07-12
IL92001A IL92001A (en) 1994-02-27

Family

ID=23062099

Family Applications (1)

Application Number Title Priority Date Filing Date
IL9200189A IL92001A (en) 1988-11-30 1989-10-16 Agc isolation of information in tdma systems

Country Status (15)

Country Link
US (1) US5638375A (en)
EP (1) EP0372759B1 (en)
JP (1) JPH04503438A (en)
KR (1) KR930008701B1 (en)
AT (1) ATE124581T1 (en)
CA (1) CA2001019C (en)
DE (1) DE68923257T2 (en)
DK (1) DK101791A (en)
ES (1) ES2073445T3 (en)
IE (1) IE71165B1 (en)
IL (1) IL92001A (en)
MX (1) MX172192B (en)
PT (1) PT92432B (en)
TR (1) TR25684A (en)
WO (1) WO1990006641A1 (en)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2243733A (en) * 1990-05-01 1991-11-06 Orbitel Mobile Communications Gain control based on average amplitude of i/p signal
GB2247793A (en) * 1990-09-06 1992-03-11 Motorola Inc Control of pulse power amplifier rise and fall
KR970000793B1 (en) * 1991-01-16 1997-01-20 모토로라 인코포레이티드 Amplitude Control of Receiver Burst Signal
US5369786A (en) * 1991-05-01 1994-11-29 Motorola, Inc. Enhanced power level usage in a radiotelephone system
FR2694853A1 (en) * 1992-08-14 1994-02-18 Trt Telecom Radio Electr An information transmission system comprising at least one base station and one satellite station and station forming part of such a system.
EP0631382B1 (en) * 1993-06-25 2001-05-09 Siemens Aktiengesellschaft Method for optimising the automatic adjustment of an amplifier in an rf-receiver
FI97765C (en) * 1993-11-26 1997-02-10 Nokia Mobile Phones Ltd Method and switching arrangement for processing call messages in a mobile telecommunications device
US5493712A (en) * 1994-03-23 1996-02-20 At&T Corp. Fast AGC for TDMA radio systems
DE4410174A1 (en) * 1994-03-24 1995-09-28 Sel Alcatel Ag Hand-held mobile radio telephone
CA2206624A1 (en) * 1996-06-10 1997-12-10 Krzysztof Duch Method of establishing a spatially normalized communication path in a networked communications system
US6463295B1 (en) 1996-10-11 2002-10-08 Arraycomm, Inc. Power control with signal quality estimation for smart antenna communication systems
US7035661B1 (en) 1996-10-11 2006-04-25 Arraycomm, Llc. Power control with signal quality estimation for smart antenna communication systems
US5930243A (en) * 1996-10-11 1999-07-27 Arraycomm, Inc. Method and apparatus for estimating parameters of a communication system using antenna arrays and spatial processing
US6275543B1 (en) 1996-10-11 2001-08-14 Arraycomm, Inc. Method for reference signal generation in the presence of frequency offsets in a communications station with spatial processing
US7299071B1 (en) 1997-12-10 2007-11-20 Arraycomm, Llc Downlink broadcasting by sequential transmissions from a communication station having an antenna array
DE19805547C1 (en) * 1998-02-11 1999-09-09 Siemens Ag Digital radio receiver for mobile radio
US8538322B1 (en) * 1998-02-23 2013-09-17 Qualcomm Incorporated Transmit and admission control for CDMA satellite communication system
US6615024B1 (en) 1998-05-01 2003-09-02 Arraycomm, Inc. Method and apparatus for determining signatures for calibrating a communication station having an antenna array
US6208626B1 (en) 1998-12-24 2001-03-27 Charles R. Brewer Real-time satellite communication system using separate control and data transmission paths
US20020167918A1 (en) * 1998-12-24 2002-11-14 Brewer Charles R. Real-time satellite communication system using separate control and data transmission paths
US6600914B2 (en) 1999-05-24 2003-07-29 Arraycomm, Inc. System and method for emergency call channel allocation
US6141567A (en) 1999-06-07 2000-10-31 Arraycomm, Inc. Apparatus and method for beamforming in a changing-interference environment
US7139592B2 (en) * 1999-06-21 2006-11-21 Arraycomm Llc Null deepening for an adaptive antenna based communication station
US6985466B1 (en) 1999-11-09 2006-01-10 Arraycomm, Inc. Downlink signal processing in CDMA systems utilizing arrays of antennae
CN100399775C (en) * 2000-07-17 2008-07-02 三菱电机株式会社 Automatic gain control device and wireless communication device
US6982968B1 (en) 2000-09-29 2006-01-03 Arraycomm, Inc. Non-directional transmitting from a wireless data base station having a smart antenna system
US6795409B1 (en) 2000-09-29 2004-09-21 Arraycomm, Inc. Cooperative polling in a wireless data communication system having smart antenna processing
US7062294B1 (en) 2000-09-29 2006-06-13 Arraycomm, Llc. Downlink transmission in a wireless data communication system having a base station with a smart antenna system
EP1458117B1 (en) * 2000-10-19 2006-07-05 Interdigital Technology Corporation TDD receiver with selectively activated agc signal measurement unit
US7085255B2 (en) * 2000-10-19 2006-08-01 Interdigital Technology Corporation Selectively activated AGC signal measurement unit
US7151759B1 (en) 2001-03-19 2006-12-19 Cisco Systems Wireless Networking (Australia) Pty Limited Automatic gain control and low power start-of-packet detection for a wireless LAN receiver
US6934327B1 (en) * 2001-04-23 2005-08-23 Rockwell Collins Acquisition of a continuous-phase modulation waveform
WO2003039043A1 (en) * 2001-10-16 2003-05-08 Telefonaktiebolaget Lm Ericsson Synchronisation of mobile equipment in time division duplex cdma system
KR100524730B1 (en) * 2002-11-02 2005-10-31 엘지전자 주식회사 Early syncrounization search method for mobile communication system
JP2010130118A (en) * 2008-11-25 2010-06-10 Sony Corp Transmitter apparatus, receiver apparatus, communication system and processing method for use in receiver apparatus
US20120287917A1 (en) * 2009-09-18 2012-11-15 Qualcomm Incorporated Common Channel Configuration to Facilitate Measurement for Handover in TD-SCDMA Systems
WO2019158183A1 (en) * 2018-02-13 2019-08-22 Abb Schweiz Ag Automatic gain control in a wireless communication network for power grid control

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257651A (en) * 1962-04-18 1966-06-21 Lyle D Feisel Pulse position modulation information handling system
US3746993A (en) * 1971-12-27 1973-07-17 Ncr Carrier detection circuit
DE3069679D1 (en) * 1980-12-08 1985-01-03 Ibm Method of transmitting information between stations attached to a unidirectional transmission ring
US4500987A (en) * 1981-11-24 1985-02-19 Nippon Electric Co., Ltd. Loop transmission system
FR2520952A1 (en) * 1982-02-03 1983-08-05 Trt Telecom Radio Electr AUTOMATIC GAIN CONTROL DEVICE (AGC) WITH QUICK ACTION
JPS59246A (en) * 1982-06-17 1984-01-05 Fujitsu Ltd Training system
GB2125653B (en) * 1982-08-04 1986-08-13 Plessey Co Plc Improved time slot arrangements for local area network systems
US4554508A (en) * 1983-12-07 1985-11-19 American Microsystems, Incorporated Carrier detection circuit
US4630267A (en) * 1983-12-23 1986-12-16 International Business Machines Corporation Programmable timing and synchronization circuit for a TDMA communications controller
US4625240A (en) * 1984-07-25 1986-11-25 Eeco, Inc. Adaptive automatic gain control
JPS6173416A (en) * 1984-09-19 1986-04-15 Nec Corp Automatic frequency/gain control circuit
JPS61105143A (en) * 1984-10-29 1986-05-23 Nec Corp Burst signal detector
FR2576472B1 (en) * 1985-01-22 1988-02-12 Alcatel Thomson Faisceaux METHOD AND DEVICE FOR AUTOMATICALLY GAIN CONTROL OF A TIME-DIVISION MULTIPLE ACCESS RECEIVER
JPS61170150A (en) * 1985-01-24 1986-07-31 Nec Corp Slave station controller of reference station in time division multiple address system
CA1259430A (en) * 1985-07-19 1989-09-12 Fumio Akashi Multipoint communication system having polling and reservation schemes
JPS62214739A (en) * 1986-03-15 1987-09-21 Nec Corp Synchronization control system
US4745599A (en) * 1987-01-05 1988-05-17 General Electric Company Random access communication system with contention scheduling of subpacketized data transmissions and scheduled retransmission of unsuccessful subpackets
US4852090A (en) * 1987-02-02 1989-07-25 Motorola, Inc. TDMA communications system with adaptive equalization
DE3885270T2 (en) * 1987-02-02 1994-02-17 Motorola Inc MULTIPLE ACCESS TRANSMISSION SYSTEM IN TIME MULTIPLEX WITH ADAPTIVE EQUALIZATION.
US4979170A (en) * 1988-01-19 1990-12-18 Qualcomm, Inc. Alternating sequential half duplex communication system
CA1288878C (en) * 1988-08-15 1991-09-10 John D. Mcnicol Timing and carrier recovery in tdma without preamable sequence

Also Published As

Publication number Publication date
WO1990006641A1 (en) 1990-06-14
US5638375A (en) 1997-06-10
DE68923257D1 (en) 1995-08-03
JPH04503438A (en) 1992-06-18
IE893304L (en) 1990-05-30
IL92001A (en) 1994-02-27
PT92432B (en) 1994-02-28
IE71165B1 (en) 1997-01-29
PT92432A (en) 1990-05-31
EP0372759B1 (en) 1995-06-28
ATE124581T1 (en) 1995-07-15
MX172192B (en) 1993-12-07
DK101791D0 (en) 1991-05-28
CA2001019C (en) 1997-04-22
ES2073445T3 (en) 1995-08-16
CA2001019A1 (en) 1990-05-31
EP0372759A3 (en) 1992-02-19
EP0372759A2 (en) 1990-06-13
DE68923257T2 (en) 1996-02-15
KR930008701B1 (en) 1993-09-13
DK101791A (en) 1991-06-25
KR900702680A (en) 1990-12-08
TR25684A (en) 1993-06-14

Similar Documents

Publication Publication Date Title
IL92001A0 (en) Agc isolation of information in tdma systems
CA2001018A1 (en) Power conservation method and apparatus for a portion of a synchronous information signal
CA2075837A1 (en) Receiver Controller Method and Apparatus
GB2093662B (en) Multiple signal transmission method and system particularly for television
FR2597231B1 (en) POSTAGE DEVICE WITH COMMUNICATION SYSTEM, AND METHOD FOR IMPLEMENTING SAME
EP0137695A3 (en) Method of signal transmission with selected signal transmission rate
GB2198916B (en) A symbol timing tracking and automatic frequency control system
EP0241216A3 (en) Method for controlling amt system including speed sensor signal fault detection and tolerance
PT80587A (en) METHOD AND DEVICE FOR SYNCHRONIZATION EXTRACTION FOR TIME-DIVISION MULTIPLEXING DIFFUSION SYSTEM OF DIGITAL AND ANALOGIC SIGNALS
CA2071725A1 (en) Lead Line Supervision System
IT8223061A0 (en) OPTICAL TRANSMISSION SYSTEM AND METHOD FOR TRANSMITTING INFORMATION USING OPTICAL SIGNALS.
JPS56128081A (en) Signal transmitting and receiving method and transceiver
AU1930288A (en) Optical receiver circuit and method
EP0145788A4 (en) METHOD AND DEVICE FOR TRANSMITTING A DIGITAL SIGNAL.
AU591260B2 (en) Apparatus and method for monitoring low level combustibles
IE822823L (en) Data detection
EP0453815A3 (en) Signal acquisition method and automatic masking system for an otdr
KR0135523B1 (en) Method for transmitting record control signals and record
GB8218491D0 (en) Identification message transmitter and receiver
EP0114520A3 (en) Marker signal detecting systems
EP0264964A3 (en) Method and apparatus for processing a video signal
JPS57210748A (en) Data transmission system
EP0333491A3 (en) An adaptive signal discrimination circuit and a method for discriminating high and low level of data signals
EP0201935A3 (en) Method and circuit for suppressing sequential &#34;zeroes&#34; data
EP0309966A3 (en) Facsimile circuit monitor system

Legal Events

Date Code Title Description
KB Patent renewed
RH1 Patent not in force